nsubstitute - Verifying function call order in a unit test -


i want unit test verifies 2 function calls happen in correct order. in example, first function encrypts file , saves file system, , second function sends encrypted file 3rd party processor (via ftp).

i using nsubstitute mock framework , fluentassertions aid in test verification. not seem can achieve nsubstitute out of box.

public void senduploadtoprocessor(stream stream, string filename) {     var encryptedfilename = filenamebuilder.buildencryptedfilename(filename);     fileencrypter.encrypt(stream, filename, encryptedfilename);     filetransferproxy.sendupload(encryptedfilename); }  [testmethod, testcategory("bvt")] public void theencryptedfileissent() {     var stream = new memorystream();     var filename = fixture.create<string>();      var encryptedfilename = fixture.create<string>();     filenamebuilder         .buildencryptedfilename(arg.any<string>())         .returns(encryptedfilename);      sut.senduploadtoprocessor(stream, filename);      // here verify fileencrypter.encrypt() gets called first      filetransferproxy         .received()         .sendupload(encryptedfilename); }

try received.inorder in nsubstitute.experimental namespace.

something (i haven't tested this):

received.inorder(() => {   fileencrypter.encrypt(stream, filename, encryptedfilename);   filetransferproxy.sendupload(encryptedfilename); });

if you're not comfortable relying on experimental functionality, need set callbacks store calls in order, assert on that.

var calls = new list<string>(); //or enum different calls fileencrypter.when(x => x.encrypt(stream, filename, encryptedfilename))              .do(x => calls.add("encrypt")); filetransferproxy.when(x => x.sendupload(encryptedfilename))                  .do(x => calls.add("upload")); // act  // assert calls contains "encrypt","upload" in correct order

if end trying received.inorder, please leave feedback on discussion group. if feedback working others can promote core namespace.


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